Comb



FIG. 1 is a front elevational view of a comb showing my new design, the rear being a mirror image thereof;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a left end elevational view thereof;

FIG. 4 is a right end elevational view thereof; and

FIG. 5 is a top plan view thereof. 

The ornamental design for a comb, as shown and described. 